Cleveland
Cleveland C55338 Spiral Point Tap Plug 3 Flutes UNC 3/4 Inch 10 TPI HSS TiN
Cuts UNC threads at 10 TPI with a TiN-coated HSS spiral-point plug tap featuring three flutes for efficient chip evacuation
- Spiral-point design pushes chips forward for cleaner through-holes
- TiN coating on high-speed steel extends edge life in steel
- Three flutes balance chip space and core strength
- UNC 3/4″-10 thread fits standard coarse-pitch applications
- H3 limit and 2B class deliver consistent fit tolerance
Thread Cutting Tool for UNC 3/4-10 Holes
The Cleveland C55338 spiral point tap creates unified coarse threads in through-holes. Its right-hand cutting direction and H3 thread limit produce a 2B class of fit. Three flutes evacuate chips ahead of the cut to reduce binding during machine or hand tapping operations.
High-Speed Steel Construction with TiN Coating
High-speed steel substrate resists wear when cutting steel and non-ferrous metals. The titanium nitride surface treatment lowers friction and extends tool life under normal cutting speeds. A 75 percent thread drill size of 16.50 mm prepares the hole for efficient chip formation and reduced torque.
Consistent Performance in Repetitive Through-Hole
The 4 1/4 inch overall length and 2 inch thread length provide reach for standard depth holes. Spiral point geometry pushes chips forward continuously during sustained production runs. This design suits repeatable through-hole work but is not intended for blind-hole applications where chips must be pulled upward.
Highlights
- Spiral-point design pushes chips forward for cleaner through-holes
- TiN coating on high-speed steel extends edge life in steel
- Three flutes balance chip space and core strength
- UNC 3/4″-10 thread fits standard coarse-pitch applications
- H3 limit and 2B class deliver consistent fit tolerance
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
How do I install the Cleveland C55338 tap and what step do people get wrong?
Drill the 16.50 mm hole for 75 percent thread depth, then run the tap straight with cutting fluid; the common error is drilling the wrong diameter or skipping lubrication.
What maintenance or replacement will the Cleveland C55338 tap need later?
The TiN-coated HSS flutes dull over time; replace the tap when threads show tear-out or torque rises sharply — resharpening is possible but rarely economical.
What limit shows up first under sustained use of the Cleveland C55338 tap?
Heat buildup in the 3-flute HSS body limits continuous cutting speed; the TiN coating delays wear, but excessive RPM or insufficient coolant causes premature edge failure.
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